Electromagnet.



17 771a$ maid Henry D /1/'// 2; r John /V ey/vo/as J. N. REYNOLDS (YE H. D; HILL.

BLEUTROMAGNET.

APPLIGATIOIY FILED MAR. 12, 1910.

1,101,095, I Patented June 23, 1914.

;. snares PATIENT @FFEQE JOHN N. REYNOLDS, OF NEW YORK, N. Y., AND HENRY D. HILL, OF MONTGLAIR, NEW JERSEY, ASSIGNORS T0 \IVESTERN ELECTRIC COMPANY, OF NEW YORK, N. Y., A

CORPORATION OF ILLINOIS.

ELECTROMAGNET.

morons.

To aZLl-eciwm it may concern:

Be it known that we, JonN N. REYNOLDS and HENRY D. HILL, citizens of the United States, residing at New York. New York county, New York, and idontclair, Essex county. New Jersey, respectively, have invented a certain new and useful Improvementin Electromagnets, of which the following is a full, clear, concise, and exact description.

Our invention relates to electroinagnets. Its object-is to simplify and improve the structure of elertromagnets, more particularly the structure of the armature and its support.

In the electromagnet of our invention the member which supports the armature is-supplied with a portion extending away from the armature which provides a mounting for a tlcxiblc reed carrying the armature.

further feature consists in euttin eaway a portion of the support opposite the reed, whereby a sharply defined bearing edge for said reed is provided. The edges of those portions of the armature members which en-ibrace the reed will, in the ordinary process of manutacture, he sheared and therot'ore will be sharp and well detined. By cutting away the support, as described, the edges of the support will likewise be definite and the operative length ol the reed can therefore be accurately gaged in assemblinc the parts.

)ur invention. although capable of geir eral application. is particularly adapted for use in bells amt is herein illustrated by its embodiment in a hell oi. the reed or harmonic type connnonly used in telephone systcms.

()ur invention will be more readily understood by reference to the accompanying drawings. in which- Figur l is a trout; elevation of a tele phone bell embodying our invention; Fig.

2 is a plan view of the armature. armature support, reed and a portion of the tapper arm. said members being shown removed i'roni the asso iated parts of the 'elex-tronuio net; Fig. 3 is a side elevation 01' the parts shown in Fig. 2: and Fig. 4 is a vertical sectional view on the line 4 4 of Fig. ltel'errin t, to the drawings, Fig. I shows a bell ol" the general type known as harmonic comprising the electromagnet 4,1

Specification of Letters Patent.

Patented June 23, T914 Application filed March 12, 1910. Serial No. 548,872.

permanent magnet 5, gongs'G and tapper arm 7. The support 8 for the armature may be mounted in any suitable manner. In the 'drawing the support is shown in threaded engagen'ient with the core extensions 9. the construction employed being that wherein the cores of the electronnignetv are rotatably carried within the spools of said electromagnetby the yoke 10, whereby they may be turned and thereby move the support 8 toward or from the cores as desired. 21 and 252- are lock nuts. The structure thus described, constituting no part of the present invention, is not set forth in detail.

Referring particularly to Figs. 2, 3 and 4, the support for the armature may consist of two members each of which,comprises portion 11 and portion 12 extending away from the armature in substantially right angled relation to each other and a portion 13 joining said portions 11. and 12, whereby said two members together constitute the support 8 having an arched portion. The two members may be so placed as to embrace the reed 14, said members being riveted or otherwise suitably secured together. The armature may likewise consist of two 1nemhers, each ot said members comprising two substantially right angled portions 16 and 17. Said two members may be, so placed as to embrace the reed 14, said members being riveted oiotherwise suitably secured to gether.

\Vith the form and arrangement of parts described the resulting structure is both simple and compact, the arched portions 1 5 lorming a recess in which the reed It may lie and into which the projecting portions 17 ot' the armature may extend.

The support 8 may be formed withopenions 18, whereby the portions 12, between which the reed is clamped, are provided with straight sharp edges 19, which definitely determine the line upon which the reed is clamped. it will be obvious that sinee the members of the support 8 would (nrdinarily be stamped troin sheet-metal, the edees alone the angles adja ent'the reed would not be sharp unless made so by being); dressed. liy cutting away the metal oppovitc the reed to l'orm the openings 18, as dcsmibed, the sharp edg s [1) are provided for in the simple process of punchin The members of the armature are tornled with straight edges 20 which sharply define the line on which the reed adjacent thereto is clamped.

W'ith the construction described eleetromagnets may be readily manufactured having reeds of uniform operative length, and therefore uniform frequency, said lengths being determined in assembling the structure by gaging the distance between the edges 19 and 20.

It is evident that although. in the structure shown herein the portion 13 oining the portions 11 and 12 is straight, said portion 13 might be of curved form without exceed ing the scope of the invention.

Having described our intention, we claim 1. The combination of an eleetroinagnet, an armature therefor, a support positioned parallel to said armature and provided with a portion extending away from the said armature, and a reed securing the said armature to the said support portion.

2. The combination with an eleetrmnagnet, of an armature, an arched support for said armature, and a reed secured to said armature and carried within the arched por tion of said support.

8. The combination with an electromagnet, of an armature, an arched support for said armature, a reed, and a projection from said armature to which said reed is secured, said projection extending into the arched portion of said support.

4. The combination. with an electromagnet, of an armature, an arched support for said armature, said armature and support each comprising two members each member having portions at right; angles to each other, and a reed for said armature carried within the arched portion of said support.

5. The combination of an electromagnet,

ta ched g members clanu'iing and carrying said reed. the menibers having openings therein the edges of the openings adjacent said reed forming a sharply defined clai'i'uoing line there or.

6. The combination with an electromagnet, of an arn'iatnre, an arched support for said armature comprising two members, and a reed for said. armature carried between said members and within the arched portion of said support, said support being cut away opposite said reed to provide a ,rhar 'ily defined bearing tor said reed.

7. The combination with an electrimiagnet, of an armature, an arched support for said armature, said armature and support each comprising two members having portions at right angles to each other, and a reed for said arn'niture embraced by the n embers of said armature and said support, the legs of the arch of said support being provided with openings adjacent the portion of said reed located between the inenr bers of said armature and said support, said openings having sharply defined S. The combination of an elcctron'iagnet, a pair of supporting, member" ring OPQI1- ings therein w i sharply a i and ed reed clamped be sen said I hers adjacent to 1 .d extendin U sharply defined edges, and an 21.2! cured to the extendinr l In witness whereof, we her nto bi our names this 9th day of i 1910. 

